Comment # 14 on bug 1129566 from Fabian Vogt

(In reply to Marcus Schaefer from comment #13)
> I've setup an integration test based on your MicroOS description such that
> we have continuous testing of the feature set needed here. This image can be
> found here:
> 
> https://build.opensuse.org/package/show/Virtualization:Appliances:Images:
> Testing_x86/test-image-MicroOS
>
> Based on that build I run a VM, and it comes up with the following layout:
> 
> ---
> UUID=c01309ae-ced9-4cb2-8eda-7711adab789b /.snapshots btrfs
> defaults,subvol=@/.snapshots 0 0
> UUID=c01309ae-ced9-4cb2-8eda-7711adab789b /home btrfs defaults,subvol=@/home
> 0 0
> UUID=c01309ae-ced9-4cb2-8eda-7711adab789b /opt btrfs defaults,subvol=@/opt 0
> 0
> UUID=c01309ae-ced9-4cb2-8eda-7711adab789b /root btrfs defaults,subvol=@/root
> 0 0
> UUID=c01309ae-ced9-4cb2-8eda-7711adab789b /srv btrfs defaults,subvol=@/srv 0
> 0
> UUID=c01309ae-ced9-4cb2-8eda-7711adab789b /tmp btrfs defaults,subvol=@/tmp 0
> 0
> UUID=c01309ae-ced9-4cb2-8eda-7711adab789b /usr/local btrfs
> defaults,subvol=@/usr/local 0 0
> UUID=c01309ae-ced9-4cb2-8eda-7711adab789b /boot/grub2/i386-pc btrfs
> defaults,subvol=@/boot/grub2/i386-pc 0 0
> UUID=c01309ae-ced9-4cb2-8eda-7711adab789b /boot/grub2/x86_64-efi btrfs
> defaults,subvol=@/boot/grub2/x86_64-efi 0 0
> UUID=c01309ae-ced9-4cb2-8eda-7711adab789b / btrfs ro 0 0
> UUID=1b6dcaba-3bc3-457a-939b-ca2e3da38c38 /var ext4 defaults 0 0
> UUID=06CC-D762 /boot/efi vfat defaults 0 0
> ---
> 
> From a partition perspective it looks like this
> 
> NAME   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
> fd0      2:0    1    4K  0 disk 
> sda      8:0    0   24G  0 disk 
> ������sda1   8:1    0    2M  0 part 
> ������sda2   8:2    0   20M  0 part /boot/efi
> ������sda3   8:3    0   19G  0 part /
> ������sda4   8:4    0    5G  0 part /var
> sr0     11:0    1 1024M  0 rom 
> 
> So /var is at the end and growable
> 
> If you are looking for code that could grow the partition. I wrote this code
> for the public cloud. It is designed to grow root but it can easily be
> adapted to just grow whatever is last
> 
> https://github.com/SUSE-Enceladus/rootgrow/pulls
> 
> Does this provide the desired layout ?

Yes, those two together should work for our use-case.

BTW, config.sh generates the ssh host key, you don't want that...

> One question from my side. The system is read-only on /etc and other parts
> of the rootfs. I guess this is by intention ?

No, you just ran into https://github.com/SUSE/kiwi/issues/945, the issue this
bug report is about. You're missing the entries in /etc/fstab that the
read-only-root-fs package takes care of.

> Thanks